NEW YORK (AP) Yankees reliever Tommy Kahnle will be shut down for 10 days and likely miss a few weeks after being diagnosed with biceps and shoulder tendinitis.

New York manager Aaron Boone revealed the diagnosis Thursday before a game against Toronto. Kahnle had an MRI this week that revealed the tendinitis. The right-hander was placed on the disabled list Tuesday.

Kahnle is 1-0 with a 6.14 ERA in six appearances. With his velocity down this season, he has struck out nine and walked eight in 7 1/3 innings.

The 28-year-old was 1-1 last season with a 2.70 ERA for New York in 32 games after being acquired from the White Sox in July. He's part of a deep Yankees bullpen that's underperformed, ranking 23rd in the majors with a 4.48 ERA entering Thursday.

New York's other injured players are making progress. Clint Frazier (concussion) was set to take batting practice and do outfield work with Class A Tampa and could play in a game soon. Brandon Drury (severe migraines) took batting practice with New York on Thursday, and Greg Bird (right ankle surgery) ran on the field, played catch and hit.

Jacoby Ellsbury is still in Tampa recovering from plantar fasciitis in his right heel as well as oblique and hip injuries. Boone said Ellsbury hit off a tee Thursday.